document.write( "Question 28982: Multiply the following fractions.\r
\n" ); document.write( "\n" ); document.write( "2x^2 - x - 3 3x^2 - 11x - 20
\n" ); document.write( "___________ . _______________
\n" ); document.write( "3x^2+7x + 4 4x^2 - 9\r
\n" ); document.write( "\n" ); document.write( "Please help me thanks so much. \n" ); document.write( "
Algebra.Com's Answer #16535 by sdmmadam@yahoo.com(530)\"\" \"About 
You can put this solution on YOUR website!
(2x^2 - x - 3) (3x^2 - 11x - 20)
\n" ); document.write( "___________ . _______________
\n" ); document.write( "(3x^2+7x + 4) (4x^2 - 9)\r
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\n" ); document.write( "\n" ); document.write( "=(2x-3)(x+1) (x-5)(3x+4)
\n" ); document.write( "___________ . _______________
\n" ); document.write( "(3x+4)(x+1) (2x+3)(2x-3)\r
\n" ); document.write( "\n" ); document.write( "=(x-5)/(2x+3) (canceling (2x-3)(x+1)(3x+4) )\r
\n" ); document.write( "\n" ); document.write( "Answer: (x-5)/(2x+3)
\n" ); document.write( "Note:(2x^2 - x - 3)
\n" ); document.write( "=2x^2-3x+2x-3
\n" ); document.write( "=x(2x-3)+1(2x-3)
\n" ); document.write( "=(2x-3)(x+1)\r
\n" ); document.write( "\n" ); document.write( "(3x^2 - 11x - 20)
\n" ); document.write( "=3x^2-15x+4x-20
\n" ); document.write( "=3x(x-5)+4(x-5)
\n" ); document.write( "=(x-5)(3x+4)\r
\n" ); document.write( "\n" ); document.write( "(3x^2+7x + 4)
\n" ); document.write( "=3x^2+4x+3x+4
\n" ); document.write( "=x(3x+4)+1(3x+4)
\n" ); document.write( "=(3x+4)(x+1)\r
\n" ); document.write( "\n" ); document.write( "(4x^2 - 9)
\n" ); document.write( "=(2x)^2-(3)^2
\n" ); document.write( "= (2x+3)(2x-3) (using a^2-b^2 = (a+b)(a-b)\r
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